<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>字符串形式的refs</title>
    <style>

    </style>
</head>
<body>
<!--准备好一个容器-->
<div id="root"></div>

<!--引入React核心库-->
<script type="text/javascript" src="../0-ReactJs-v16.14.0/react.development.js"></script>
<!--引入React-Dom，用于支持React操作Dom-->
<script type="text/javascript" src="../0-ReactJs-v16.14.0/react-dom.development.js"></script>
<!--引入babel，用于将jsx转为js-->
<script type="text/javascript" src="../0-ReactJs-v16.14.0/babel.min.js"></script>

<script type="text/babel">

    //创建组件
    class Demo extends React.Component {
        showData = ()=>{
            const {input1} = this.refs
            alert(input1.value);
        }

        showData2 = ()=>{
            const {input2} = this.refs
            alert(input2.value);
        }

        render() {
            return (
                <div>
                    <input ref="input1" type="text" placeholder="点击按钮提示数据"/>&nbsp;
                    <button onClick={this.showData}>点我提示左侧数据</button>&nbsp;
                    <input ref="input2" onBlur={this.showData2} type="text" placeholder="失去焦点提示数据"/>
                </div>
            )
        }
    }

    //渲染组件到页面
    ReactDOM.render(<Demo/>, document.getElementById('root'));

</script>

</body>
</html>
